I'm building a SaaS (https://kirnu.io, feel free to check out) platform and approaching beta testing little by little. As of yet, I have not made a lot of public promotion and have primarily focused on promotion in my personal network which has yielded some success.
My main reason for the lack of wider public promotion is, that I am primarily interested in finding a small group of beta testers with whom I could have a real two-way dialogue during the development.
Therefore I am really looking forward to directly emailing / calling / contacting potential beta users (SaaS companies' founders, CTOs, customer success managers, ...). So far, I have put that off as it might be another month or so until we are beta ready. My thinking is that cold approaching potential users would be much more effective, if I had the possibility to say that the beta is ready whenever they are as opposed to having to say that it might be two, four or six weeks. With personal connections that is easier, as you have already built rapport.
How do you feel about this? When is the right time to approach potential users directly regarding beta testing?